Set in sun-drenched Cape Town, South Africa, The Red Monkey Double Happiness Book — featuring two full-length stories, “The Leaking Cello Case” and “John Wesley Harding” — is stuffed to the gills with mystery, suspense, action, adventure, conspiracy theories, cool cars, and excellent weed as Dave and his freeloading pal Paul, well-meaning stoners in the tradition of Cheech & Chong and Harold & Kumar, thwart criminal malfeasance even as they ponder the larger questions, such as, “What steps can I personally take to help protect the Earth and the species that inhabit it?” (though most people’s answers to these questions don’t involve sword fights and hovercrafts).